1999 Oklahoma tornado outbreak

An F5 tornado ripped through Oklahoma in 1999. (Source: National Weather Service)

The National Weather Service posted a photo on their Facebook page of the tornado tracks from 1999 and today. (Source: NWS)

(RNN) - On May 3, 1999, an F5 tornado touched down near Chickasha, OK and cut northeast through the state before dissipating near Midwest City, OK.

Monday's tornado that devastated Moore, OK closely followed that path.

The F5 tornado killed 36 people, damaged more than 8,000 homes and business, and caused more than $1 billion in damage.

Winds may have exceeded 318 mph.

The tornado was a part of a massive outbreak in Texas, Oklahoma and Kansas that saw 74 tornadoes touching down in 21 hours.

During the outbreak, 40 people were killed in Oklahoma and 675 people were injured, according to the National Weather Service. Near Wichita, KS, five people were killed, 100 injuries and heavy damage were reported.

Since this tornado, the National Weather Service modified the tornado scale from the Fujita scale to the Enhanced Fujita scale, which now rates the strength of tornadoes.